Using the DeWalt DCD997CP2BT is a breeze. First, charge the included DCB205BT batteries using the charger. Once charged, insert the battery into the hammer drill. To pair the tool with the Tool Connect™ app, hold the pair button on the tool foot for 3 - 5 seconds. You can then use the app to track the tool, assign it to jobsites, and customize settings. When using the drill, select the appropriate speed setting and clutch setting based on your task. The 3 custom RPM settings allow you to get the precise speed you need. For the LED light, you can adjust its brightness and delay to suit your working conditions. As for maintenance, keep the tool clean and dry. Regularly check the chuck for any debris or damage. If you're not using the tool for a long time, store it in the kit box. Make sure to follow the 'disable when out of range' alert settings to prevent unauthorized use. Also, be aware that the integrated battery has a 3 - year life, so replace it when necessary.